Initial evidence at the scene suggested the attack may have been a suicide bombing, said two USA security officials, who spoke on the condition of anonymity to discuss an ongoing investigation.
Parents posted pictures of missing children on social media, pleading for information. Twitter and Facebook were filled with appeals for the missing.
"We are working to establish the full details of what is being treated by the police as an appalling terrorist attack".
A police helicopter hummed over the city as somber commuters hurried to work.
"Broken. From the bottom of my heart, I am so so sorry".
Later at a press conference, Chief Constable Ian Hopkins of the Greater Manchester Police confirmed the explosion was being investigated as an act of terror, and that police had identified a suspect.
He said the blast was by the foyer door, next to the merchandise, and that glass and metal nuts were left on the floor. "It was nearly like they waited for her to go". Please stay away from the area. "What should have been a superb evening is now just disgusting".
Following the attack, British Prime Minister Theresa May has suspended her General Election campaign.
There was mass panic after the explosion at the end of the concert, which was part of Grande's The Dangerous Woman Tour. "Police cars were everywhere".
Trudeau said he was "devastated" when he heard about the "innocent victims who were killed or injured. many of them far too young".
"A huge bomb-like bang went off that hugely panicked everyone and we were all trying to flee the arena", he said. "It was chaotic. Everybody was running and screaming and just trying to get out".
Manchester Arena, the largest indoor arena in Europe, opened in 1995 and is a popular concert and sporting venue.
He said on Twitter that his girlfriend was in the arena with a friend, but was unharmed.
Among the names being circulated was Olivia Campbell. As one source said, she's incapable of performing for anyone. He is hospitalized but Olivia is missing, the mother told ITV television's Good Morning Britain breakfast show.
"Luckily they weren't there, I managed to find them outside the arena and got them back to the hotel".
Ivo Delgado, a witness, told CNN he heard one explosion.
"If anyone sees Olivia, lend her your phone, she knows my number". It was not immediately clear whether those concerts would go forward following Monday's attack. Supporters of the extremist Islamic State group, which holds territory in Iraq's Mosul and around its de facto capital in the Syrian city of Raqqa, celebrated the blast online.
"At this time, we have no information to indicate a specific credible threat involving music venues in the United States", the department said in a statement.
"This wicked ideology must be obliterated. And I mean completely obliterated", he added.
If confirmed, it would be the deadliest militant assault in Britain since four British Muslims killed 52 people in suicide bombings on London's transport system in July 2005.
Video from inside the arena showed concertgoers screaming as they made their way out amid a sea of pink balloons.
Grande's role as Cat Valentine on Nickelodeon's high school sitcom "Victorious" propelled her to teen idol status, starting in 2010. She was scheduled to perform in England, Belgium, Poland, Germany and Switzerland.
Pop concerts and nightclubs have been a terrorism target before.
Many of those attending the concert were teenagers venturing to their first concert.
In Turkey, 39 people died when a gunman attacked New Year's revelers at the Reina nightclub in Istanbul. Those attacks killed 130 people, including dozens trapped inside an Eagles of Death Metal concert in the Bataclan theatre.
Katz and Lawless reported from London.
Greater Manchester Police said they were called to the venue at around 10.33pm and approach roads were closed.
Joe Lieberman gives a "thumbs-up" as he leaves the West Wing of the White House in Washington , Wednesday, May 17, 2017. President Trump admitted he thought his firing of FBI Director James Comey would be positively viewed by both sides.
Brazilian President Michel Temer refused to resign on Thursday despite being implicated in corruption allegations. The Brazilian real tumbled on allegations Mr Temer condoned bribery payments to a witness in a corruption probe.
The private sector grew by 2.3 percent or 61,700 jobs, and the public sector increased by 2.6 percent, adding 14,800 jobs. The last time the USA unemployment rate was below 4.4. percent was when it was at 4.3 percent in May 2001, Gedney said.
Soon you'll be able to order pizza, shop for clothes, or maybe pay your utility bills using Telegram bots. The update includes three major features: video messaging , bot payments , and Instant View ...
You do not need to do this if you were registered to vote at the European Union referendum, and you have not changed address. Even if it isn't a popular choice, just vote. "The general election registration deadline is fast approaching".
The Preakness was the first time Always Dreaming was running back on two weeks' rest; he had a five-week gap going into the Derby. It was the first career Triple Crown win for Brown. "He ran so hard in the Derby and today just wasn't his day", said Pletcher.
With the woman in tow, the robber made their way around the home and took several items, including around $1.5 million in jewelry. At 11:30 PM on Tuesday three male suspects knocked on the door to his L. home, police officials told the site.
The Cabinet official said he will discuss with other members of the economic team - Budget Secretary Benjamin M. People who sell tobacco products in banned places could be jailed for up to three years, the order said.
As at most telecommunications companies, AT&T's wireless business is growing faster and is more profitable than its wireline side. The CWA estimates that AT&T cut roughly 12,000 call center jobs in America and created the same in some foreign country.
A slight chance of a morning shower, then sunny with lower afternoon humidity Wednesday afternoon, high in the mid to high 90's. Hail and high winds were reported in central Kansas and tornadoes and large hail were reported in southwest Kansas on Tuesday .
And this is thought to have helped Mr Rouhani, who received close to 23 million votes out of the 40 million that were cast. Hashemitaba was among the first to predict an outright win for Rouhani as he offered his congratulations Saturday morning.
Crosby took a nasty spill in the first period when he was slammed into the end boards head-first while he tangled with Carlson. Another stunning collapse -this one in five games- may have caused total reconstruction of the Capitals organization.
After a visit later Tuesday to the Yad Vashem Holocaust memorial in Jerusalem , he is due to give a speech at the Israel Museum. And earlier this month, Turkish President Recep Erdogan said it would be "extremely ill-advised" for Trump to move the embassy.
Given the trend of nostalgia and reboots, it should come to no surprise that the Terminator franchise will be receiving more life. Speaking to Screen in Cannes, [.] Schwarzenegger confirmed that he will star in a new Terminator film produced by James Cameron.
Chicago's Eddie Butler lasted three-plus innings in his second start of the season, allowing two runs, three hits and five walks. Manager Craig Counsell made the announcement Friday before Milwaukee's series opener at Wrigley Field against the Cubs.
The statues would be put in storage while the city looks for a suitable place to display them, the mayor has said. The city plans to leave the column where Lee's statue stood intact and will mount public art in its place.
Event spokesperson Jeff Darman said Tillis suffered a seizure and was transported to George Washington University Hospital. Thom Tillis said Wednesday he's "fine" after he collapsed during a Washington race and was taken away by ambulance.